flex-hone cylinder ball-hone 46-48mm for yamaha yz85 2002-2018. $39.40. $39. . 40. save 5 on 2 select item (s) free shipping. only 18 left in stock - order soon.,cylinder cone ball mill working,cone ball mill super fine grinding mill jxsc machine. 2021-7-3 working principle of ball mill the special conical structure of the conical ball mill can naturally separate the grinding medium (steel ball), the big ball is located in the biggest diameter section of the cylinder body.